CN109690893B

CN109690893B - Discharge device and electrical apparatus

Info

Publication number: CN109690893B
Application number: CN201780014188.7A
Authority: CN
Inventors: 江崎哲也; 山下光义; 冈野哲之; 大江信之
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2016-09-21
Filing date: 2017-01-27
Publication date: 2020-12-15
Anticipated expiration: 2037-01-27
Also published as: WO2018055784A1; TW201828999A; TWI653061B; JPWO2018055784A1; CN109690893A; JP6766158B2

Abstract

An ion generation device (1) comprises: a discharge electrode (15) having a tip (42) for discharging; and a protective plate (51) that protects at least a portion of the distal end portion (42) from the flow of air passing through the discharge electrode (15) in the predetermined air blowing direction (A).

Description

Discharge device and electrical apparatus

Technical Field

The present invention relates to a discharge device for performing discharge and an electric apparatus having the discharge device.

Background

The discharge device is applied to an air cleaner for purifying, sterilizing, or deodorizing indoor air, for example. In the discharge device, for example, corona discharge is generated between a discharge portion of a discharge electrode to which a high voltage is applied and an induction electrode, thereby generating particles having a high energy state such as electrons, ions, ozone, radicals, and active groups from the air. The generated particles are carried in the air cleaner by the blown air in the blowing direction and released to the outside.

As the discharge electrode, a needle-shaped discharge electrode as described in patent document 1, a brush-shaped discharge electrode as described in patent document 2, in which bases of a plurality of fibrous conductors are bundled, and the like are known.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication (Japanese patent laid-open No. 2013-065537)

Patent document 2: japanese laid-open patent publication No. 2008-034220

Disclosure of Invention

Technical problem to be solved by the invention

When the discharge device is used for a long period of time, the dust, dirt, and other deposits contained in the blown air adhere to the discharge portion of the discharge electrode, and the discharge performance deteriorates.

The present invention has been made in view of the above problems, and an object thereof is to provide a discharge device and the like capable of suppressing deterioration of discharge performance.

Technical solution for solving technical problem

In order to solve the above problem, a discharge device according to an aspect of the present invention is a discharge device that performs discharge, including: a discharge electrode having a discharge portion for performing the discharge; and a protective member that protects at least a part of the discharge portion from a flow of the gas passing through the discharge electrode in a predetermined direction.

Advantageous effects

According to one aspect of the present invention, an effect is obtained that deterioration of discharge performance can be suppressed.

Drawings

Fig. 1 is a perspective view showing a schematic configuration of an ion generating device according to an embodiment of the present invention.

Fig. 2 is a front view, a plan view, and a side view showing a schematic configuration of the ion generating apparatus.

Fig. 3 is a cross-sectional view taken along the line α - α of fig. 2 and viewed in the direction of the arrow, and shows the positional relationship between the protective plate and the discharge electrode in the ion generating device.

Fig. 4 is a cross-sectional view of an ion generating device according to another embodiment of the present invention, as viewed in the direction of the arrow, and is a view showing a positional relationship between a protective plate and a discharge electrode in the ion generating device.

Fig. 5 is a side view schematically showing a discharge electrode in an ion generating device according to still another embodiment of the present invention.

Fig. 6 is a schematic diagram showing an example of an internal configuration of an electric device according to another embodiment of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail. For convenience of explanation, members having the same functions as those of the members shown in the embodiments are given the same reference numerals, and explanations thereof are omitted as appropriate.

[ first embodiment ] to provide a toner

First, an embodiment of the present invention will be described with reference to fig. 1 to 3.

(outline of ion generating apparatus)

Fig. 1 is a perspective view showing a schematic configuration of an ion generating device according to the present embodiment. Fig. 2 is a front view, a plan view, and a side view showing a schematic configuration of the ion generating apparatus. The ion generating device is applied to an electric apparatus such as an air cleaner, and is a device that generates ions by discharging in blown air in the electric apparatus. However, the present invention is not limited to the ion generating device, and can be applied to any discharge device that generates particles having a high energy state such as electrons, ozone, radicals, and active radicals from a gas by discharge.

As shown in fig. 1 and 2, an ion generating device 1 (discharge device) of the present embodiment includes a case 11, a discharge control circuit board 12, a step-up transformer 13, an ion generating element substrate 14 (mounting member),

discharge electrodes

15 and 16, and an insulating sealing material 17.

The case 11 is flat and substantially box-shaped, and is formed of insulating resin. The case 11 is provided with an opening 21 on a surface (a top surface in the example of fig. 1 and 2) including a long side and a short side among three sides defining a box shape. A connector 23 for connection to an external power supply is provided at a corner of the bottom 22 on the outside of the case 11.

Hereinafter, the opening 21 side of the case 11 is referred to as the upper side, and the bottom 22 side is referred to as the lower side. The upstream side in the predetermined blowing direction a is referred to as the front side, and the downstream side is referred to as the rear side.

Inside the case 11, from the bottom portion 22 toward the opening portion 21, there are stored in order: a step-up transformer 13, a discharge control circuit board 12, and an ion generating element board 14. The inside of the case 11 is filled with an insulating sealing material 17. As the insulating sealing material 17, an insulating material such as epoxy resin or urethane resin is used.

The insulating sealing material 17 maintains electrical insulation among the discharge control circuit board 12, the step-up transformer 13, and the ion generating element substrate 14. The opening 21 is sealed with an insulating sealing material 17. Therefore, even if the opening 21 is not provided with a cover, dust and the like can be prevented from adhering to the discharge control circuit board 12, the step-up transformer 13, and the ion generating element substrate 14.

The discharge control circuit board 12 is a long, thin, and substantially rectangular circuit board. A transformer driving circuit (not shown) is disposed on the discharge control circuit board 12. The transformer driving circuit is a circuit that: the step-up transformer 13 is driven by converting a dc voltage from an external power supply into a predetermined ac voltage and applying the converted ac voltage to the step-up transformer 13.

The step-up transformer 13 is a transformer for stepping up the ac voltage applied by the transformer driving circuit.

The ion generating element substrate 14 is a long, thin, substantially rectangular circuit substrate. An ion generating element is disposed on the ion generating element substrate 14. The ion generating element generates at least one of positive ions and negative ions by applying the ac voltage boosted by the step-up transformer 13.

The ion generating element includes

discharge electrodes

15 and 16 and

inductive electrodes

31 and 32. The discharge electrode 15 is attached to one end of the ion generating element substrate 14. The inductive electrode 31 is formed at a part of the periphery of the mounting position of the discharge electrode 15. The discharge electrode 16 is attached to the other end of the ion generating element substrate 14. The inductive electrode 32 is formed at a part of the periphery of the mounting position of the discharge electrode 16. The ion generating element substrate 14 is provided with a connection electrode 33 for electrically connecting the

inductive electrodes

31 and 32 to each other.

The inductive electrode 31 is an electrode for forming an electric field with the discharge electrode 15, and the inductive electrode 32 is an electrode for forming an electric field with the discharge electrode 16. The discharge electrode 15 is an electrode for generating negative ions between itself and the induction electrode 31. On the other hand, the discharge electrode 16 is an electrode for generating positive ions with the inductive electrode 32. The

inductive electrodes

31 and 32 and the connection electrode 33 are set to a potential that is paired with the potential on the discharge electrode side of the step-up transformer 13.

The

discharge electrodes

15 and 16 are provided perpendicularly from the surface of the ion generating element substrate 14, and protrude from the surface of the insulating sealing material 17. The discharge electrode 15 is a brush-shaped discharge electrode, and includes: the electric element has a plurality of linear conductors 41, a tip portion 42 (discharge portion) formed in a brush shape, and a base end portion 43 to which the plurality of conductors 41 are attached. The discharge electrode 16 is a brush-shaped discharge electrode, and includes: the electric element has a plurality of linear conductors 44, a tip portion 45 (discharge portion) formed in a brush shape, and a base end portion 46 to which the plurality of conductors 44 are attached.

The

distal portions

42 and 45 represent distal portions from the

proximal portions

43 and 46, and specifically represent: the

conductors

41 and 44 are bundled at their base ends into brush-

like conductors

41 and 44 from their tip ends 41a and 44a to the connection ends (contact ends) with the base ends 43 and 46. The linear shape includes a filament shape, a fiber shape, and a wire shape.

The

distal end portions

42 and 45 of the

discharge electrodes

15 and 16 are formed of a conductive material such as metal, carbon fiber, conductive fiber, or conductive resin. Each of the plurality of

conductors

41, 44 in the

distal end portions

42, 45 has an outer diameter of 5 μm or more and 30 μm or less. By setting the outer diameters of the

conductors

41 and 44 to 5 μm or more, the mechanical strength of the

conductors

41 and 44 can be secured, and the electrical wear of the

conductors

41 and 44 can be suppressed. Further, by setting the outer diameters of the

conductors

41 and 44 to 30 μm or less, the

conductors

41 and 44 are formed so as to be bent like hairs, and the spreading and swinging of the

conductors

41 and 44 are facilitated.

The

conductors

41 and 44 may be carbon fibers having an outer diameter of 7 μm or conductive fibers made of SUS (stainless steel) having an outer diameter of 12 μm or 25 μm, respectively.

The base end portion 43 of the discharge electrode 15 has: a metal plate-like mounting portion 43a for mounting the discharge electrode 15 on the ion generating element substrate 14, and a binding portion 43b for binding the plurality of conductors 41 in the tip portion 42 at the connection end. Similarly, the base end portion 46 of the discharge electrode 16 has: a metal plate-like mounting portion 46a for mounting the discharge electrode 16 to the ion generating element substrate 14, and a binding portion 46b for binding the plurality of conductors 44 in the tip portion 45 at the connection end.

As shown in fig. 1 and 2, a part of the

discharge electrodes

15 and 16 is exposed to the outside through the opening 21 of the case 11. Therefore, there is a problem that the ion generating device 1 falls down or fingers of an operator contact the

discharge electrodes

15 and 16 of the ion generating device 1 to deform or break the

discharge electrodes

15 and 16 during a period from the time of manufacturing the ion generating device 1 to the time of mounting the ion generating device 1 on various electric apparatuses.

Therefore, in the present embodiment, the protective plates 51 and 52 (protective members) as plate-like members for protecting the discharge electrode 15 are provided so as to protrude from the opening 21 of the case 11 so as to sandwich the discharge electrode 15. Similarly, protective plates 53 and 54 (protective members) as plate-shaped members for protecting the discharge electrode 16 are provided so as to protrude from the opening 21 of the case 11 so as to sandwich the discharge electrode 16.

The

tip portions

51a and 52a of the

protective plates

51 and 52 protrude upward from the tip portion 42 of the discharge electrode 15. Similarly, the

tip portions

53a and 54a of the

protective plates

53 and 54 protrude upward from the tip portion 45 of the discharge electrode 16. Thus, even when the ion generating apparatus 1 falls down, for example, the

discharge electrodes

15 and 16 can be prevented from directly contacting an object outside the ion generating apparatus 1. Further, the fingers of the operator can be prevented from touching the

discharge electrodes

15 and 16 of the ion generating device 1. As a result, the

discharge electrodes

15 and 16 can be prevented from being deformed and damaged.

Further, the protection plates 51 to 54 are preferably formed integrally with the case 11. In this case, the number of manufacturing steps can be reduced, and the manufacturing cost can be reduced.

Openings

51b and 52b (holes) are formed in the middle of the

protective plates

51 and 52, respectively. Therefore, ions generated by the discharge of the discharge electrode 15 can be sent to the air blowing direction a through the

openings

51b and 52b, and the ions can be prevented from staying in the vicinity of the discharge electrode 15. Similarly,

openings

53b and 54b (holes) are formed in the middle of the

protective plates

53 and 54, respectively. Therefore, ions generated by the discharge of the discharge electrode 16 can be sent to the air blowing direction a through the

openings

53b and 54b, and the ions can be prevented from staying in the vicinity of the discharge electrode 16.

The protection plate 51 and the protection plate 53 are connected by a connection plate 55. This can increase the strength of the protective plate 51 and the protective plate 53. Similarly, the protection plate 52 and the protection plate 54 are connected by a connection plate 56. This can increase the strength of the protective plate 52 and the protective plate 54.

(positional relationship between the protective plate and the discharge electrode)

Fig. 3 is a cross-sectional view taken along the line α - α of fig. 2 and viewed in the direction of the arrows, showing the positional relationship between the

protective plates

51 and 52 and the discharge electrode 15. Fig. 3 (a) shows a state where a high voltage is not applied to the discharge electrode 15, and fig. 3 (b) shows a state where a high voltage is applied to the discharge electrode 15. The same applies to the positional relationship between the

protective plates

53 and 54 and the discharge electrode 16.

As shown in fig. 3 (a), when a high voltage is not applied to the discharge electrode 15, the distal ends 41a of the plurality of linear conductors 41 are in a closed state, and all the distal ends 41a face the distal end 51a of the protective plate 51 on the upstream side in the air blowing direction a. That is, the height from the end face 21a of the opening 21 to the tip 41a of the conductor 41 is higher than the height from the end face 21a to the bottom face (the top face of the opening 51 b) of the tip 51a of the protection plate 51 and lower than the height from the end face 21a to the top face of the tip 51a for all the conductors 41.

This protects all the distal ends 41a of the conductors 41 from the blown air flow. Therefore, the attached matter such as dust and dirt contained in the air is less likely to adhere to the distal end 41 a. As a result, deterioration of the discharge performance of the discharge electrode 15 can be suppressed.

Next, as shown in fig. 3 (b), when a high voltage is applied to the discharge electrode 15, a plurality of (a part of) the outer conductors 411 of the plurality of conductors 41 are bent (deformed) outward, and discharge starts at the tip 411a thereof. At this time, the tip 411a faces (corresponds to) the opening 51b of the protective plate 51. That is, the height from the end face 21a of the opening 21 to the tip 411a of the conductor 411 is lower than the height from the end face 21a to the bottom face (the top face of the opening 51 b) of the tip 51a of the protection plate 51. Therefore, the tip 411a is exposed to the blown air flow. Accordingly, ions generated by the discharge of the tip 411a can be efficiently moved by the air flow.

On the other hand, the other conductor 412 is not bent outward, and discharge is less likely to occur. At this time, the distal end 412a faces the distal end 51a of the protective plate 51, and is protected from the blown air flow as in the case of fig. 3 (a). Therefore, the attached matter contained in the air is less likely to adhere to the distal end 411 a. As a result, deterioration of the discharge performance of the conductor 412 which does not contribute to discharge can be suppressed.

When the plurality of conductors 411 repeat discharge thereafter, the discharge becomes difficult due to an attached matter or the like attached to the distal end 411 a. At this time, a plurality of (a part of) outer conductors among the other conductors 412 are bent outward, and discharge starts at the tip thereof. Accordingly, the ions generated by the electric discharge at the tip can be efficiently moved by the air flow as described above. In addition, in the other conductor 412, deterioration of the discharge performance of the plurality of conductors in which discharge has already started is suppressed, and thus, good discharge performance can be maintained. As a result, the durability of the ion generating apparatus 1 can be improved.

Although the positional relationship between the discharge electrode 15 and the protective plate 51 positioned on the upstream side in the air blowing direction a from the discharge electrode 15 has been described, the positional relationship between the discharge electrode 15 and the protective plate 52 positioned on the downstream side in the air blowing direction a from the discharge electrode 15 is also the same in the present embodiment. This makes it possible to obtain the above-described result even when air is blown in the direction opposite to the air blowing direction a.

As shown in fig. 3, the base ends of the plurality of conductors 41 bundled (tightened) by the bundling portion 43b are covered with a protective resin 47. The protective resin can be formed by curing a resin material such as a UV (ultraviolet) curable resin by irradiating ultraviolet rays. Since the protective resin 47 also functions as an adhesive, the base ends of the plurality of conductors 41 can be bundled together more firmly.

[ second embodiment ] to provide a medicine for treating diabetes

Another embodiment of the present invention is explained with reference to fig. 4. The ion generating device 1 according to the present embodiment differs from the ion generating device 1 shown in fig. 1 to 3 in that needle-like discharge electrodes 151 and 161 (discharge portions) are provided instead of the brush-

like discharge electrodes

15 and 16, and the other configurations are the same.

Fig. 4 is a cross-sectional view of the ion generating device 1 of the present embodiment, as viewed in the direction of the arrows in fig. 3, showing the positional relationship between the

protective plates

51 and 52 and the discharge electrode 151. The positional relationship between the

protective plates

53 and 54 and the discharge electrode 161 is also the same.

As shown in fig. 4, the tip 151a of the discharge electrode 151 is tapered, and when a high voltage is applied, discharge starts at the tip 151 a. The tip 151a of the discharge electrode 151 faces the tip 51a of the protective plate 51 on the upstream side in the air blowing direction a. That is, the height from the end face 21a of the opening 21 to the tip 151a of the discharge electrode 151 is higher than the height from the end face 21a to the bottom face (the top face of the opening 51 b) of the tip 51a of the protective plate 51 and lower than the height from the end face 21a to the top face of the tip 51 a.

Thereby, the tip 151a of the discharge electrode 151 is protected from the blown air flow. Therefore, the attached matter such as dust and dirt contained in the air is less likely to adhere to the distal end 151 a. As a result, deterioration of discharge performance of the discharge electrode 151 can be suppressed.

On the other hand, the upper periphery of the tip 151a of the discharge electrode 151 does not face the protective plate 51, and the lower periphery faces (corresponds to) the opening 51b of the protective plate 51. Therefore, the air flows in the space adjacent to the longitudinal direction of the discharge electrode 151 with respect to the tip 151a, and therefore, ions generated around the tip 151a by the discharge of the tip 151a can be efficiently moved by the air flow.

Although the positional relationship between the discharge electrode 151 and the protective plate 51 positioned on the upstream side in the air blowing direction a from the discharge electrode 151 has been described, the positional relationship between the discharge electrode 151 and the protective plate 52 positioned on the downstream side in the air blowing direction a from the discharge electrode 151 is also the same in the present embodiment. This makes it possible to obtain the above-described result even when air is blown in the direction opposite to the air blowing direction a.

[ third embodiment ]

Still another embodiment of the present invention is explained with reference to fig. 5. In the ion generating device 1 according to the present embodiment, the characteristics of the plurality of

linear conductors

41 and 44 at the

distal end portions

42 and 45 of the

discharge electrodes

15 and 16 are different from each other, and the other configurations are the same as those of the ion generating device 1 shown in fig. 1 to 3.

Fig. 5 is a side view schematically showing the discharge electrode 15 in the ion generating device 1 according to the present embodiment. Fig. 5 (a) shows a state where a high voltage is not applied to the discharge electrode 15, and fig. 5 (b) to (d) show a state where a high voltage is applied to the discharge electrode 15. Fig. 5 (d) is a reference example. The same applies to the discharge electrode 16.

The state of the discharge electrode 15 shown in fig. 5 (a) · (b) is the same as the state of the discharge electrode 15 shown in fig. 3 (a) · (b), and therefore, the description thereof is omitted.

When the plurality of conductors 411 repeat discharge, the conductors may be bent as shown in fig. 5 (d) due to an adhesive substance or the like attached to the distal end 411 a. The electrical conductor 413 has a reduced discharge performance due to an increase in resistance at the bent portion.

Therefore, in the present embodiment, the conductor 41 has brittleness. The brittleness is as follows: the property of breaking without plastic deformation, or without significant plastic deformation. The conductor 41 may be a conductor whose material is brittle or a conductor whose structure is brittle. Examples of the conductor 41 having a brittle structure include a porous conductor and a hollow conductor.

According to the above configuration, the plurality of conductors 411 are broken as shown in fig. 5 (c), instead of being bent as shown in fig. 5 (d). The conductor 414 remaining after the breaking, that is, the portion on the base end side of the broken conductor 411 has a shorter length than the

other conductors

411 and 412, and is less likely to be deformed outward, and thus is less likely to discharge. Therefore, a part of the other conductor 412 is bent outward, and discharge starts at the tip. As a result, the discharge performance is maintained, and thus, the discharge performance can be prevented from being degraded due to the bending of the conductor 411.

Further, the portion of the broken conductor 411 on the tip side is preferably moved to the air blowing direction a by the air flow. In this case, the possibility that the tip end portion adheres to the surface of the insulating sealing material 17 to degrade the discharge performance can be reduced.

[ fourth embodiment ] A

Another embodiment of the present invention is explained with reference to fig. 6. In the present embodiment, an electric device including the ion generating device 1 shown in fig. 1 to 5 will be described.

Fig. 6 is a schematic diagram showing an example of the internal configuration of the electric device according to the present embodiment. As shown in fig. 6, the following example is shown: the ion generator 1 of the electric apparatus 100 is attached to a part of a fan casing 101 forming an air flow passage 102, and the air flow passage 102 is a passage for guiding ions generated by the ion generator 1 to the outside.

Therefore, the air duct 102 includes: an ion generating device 1; and a blower 103 for blowing the gas carrying the ions generated by the ion generator 1. The ion generating device 1 is provided downstream of the air blowing device 103 in the air blowing direction a.

The air blowing device 103 may be a sirocco fan, a cross flow fan, or another fan.

The ion generating device 1 may be integrally assembled to the electrical apparatus 100, or may be detachably provided to the electrical apparatus 100. Since the ion generating device 1 is detachably provided to the electric apparatus 100, replacement or cleaning of the ion generating device 1 becomes possible, and maintenance of the electric apparatus 100 becomes easy.

The electric device 100 is not particularly limited, and may be, for example: ionizers, air conditioners, dehumidifiers, humidifiers, air purifiers, fan heaters, or other devices. The electric apparatus 100 may be used in a home or a vehicle.

(modification example)

Although the present embodiment illustrates a case where electrical apparatus 100 includes air blowing device 103, air blowing device 103 is not essential. The ions generated by the ion generating apparatus 1 may also be discharged to the outside by, for example, thermal convection.

(Note attached)

In the above-described embodiment, the discharge electrode has the brush-shaped tip portion 42 (fig. 3 and 5) or the needle shape (fig. 4), but is not limited thereto. The discharge electrode may be any shape that can discharge electricity, such as a rod, a needle, a brush, a wire, a fiber, or a sheet.

In the above embodiment, air passes through the discharge electrode, but the present invention is not limited to this. Any gas that can be discharged by the discharge electrode described above may be used, such as: oxygen gas, nitrogen gas, carbon dioxide gas, helium gas, argon gas, a mixed gas in which two or more of these gases are combined, and the like.

In the above embodiment, two ion generating elements are used, but the present invention is not limited to this. Only one ion generating element may be used, or three or more ion generating elements may be used.

[ SUMMARY ] to provide a medicine for treating diabetes

A discharge device (ion generating device 1) according to an aspect of the present invention is a device that performs discharge, and has a configuration including: discharge electrodes (15, 16) having discharge portions (distal end portions 42, 45) for performing the discharge; and protective members (protective plates 51 to 54) for protecting at least a part of the discharge portion from the influence of the flow of the gas passing through the discharge electrode in a predetermined direction (air blowing direction A).

According to the above configuration, at least a part of the discharge portion of the discharge electrode is protected from the flow of the gas passing through the discharge electrode in the predetermined direction, and therefore, the deposits contained in the gas are less likely to adhere to the discharge portion of the discharge electrode. As a result, deterioration of the discharge performance of the discharge electrode can be suppressed.

In the discharge device according to the second aspect of the present invention, in the first aspect, the discharge device may be configured such that: the discharge section has a plurality of linear conductors (41, 44), and the protection member exposes the distal end (411a) of the conductor (411) located outside to the flow of the gas, while protecting the distal ends (412a) of the other conductors (412) from the flow of the gas.

In this case, when a high voltage is applied to the discharge electrode, the tip of a part of the conductor is deformed outward, and discharge starts at the tip. At this time, the tip of the conductor of the portion located outside is exposed to the flow of the gas. Thus, particles generated by the discharge can be efficiently moved by the flow of the gas. On the other hand, the tip of the other conductor is not deformed outward, and therefore can be protected from the flow of the gas, and as a result, deterioration of discharge performance can be suppressed.

When the discharge is repeated and the partial conductor becomes hard to discharge, the tip of the partial conductor of the other conductor is deformed outward and discharge is started at the tip. Therefore, as described above, the particles generated by the discharge can be efficiently moved by the flow of the gas. Further, since deterioration of the discharge performance of a part of the other conductor is suppressed, the discharge performance of the discharge electrode can be maintained well. As a result, the durability of the discharge device can be improved.

In the discharge device according to the third aspect of the present invention, in the second aspect, the conductor may have brittleness. In this case, the electrical conductor will not bend but break. The conductor remaining after the breaking is shorter in length than other conductors, and is less likely to deform outward, and therefore, is less likely to discharge electricity. Therefore, the tip of a part of the other conductor is deformed outward, and discharge starts at the tip. This maintains the discharge performance, and thus, the reduction of the discharge performance due to the bending of the conductor can be prevented.

In the discharge device according to the fourth aspect of the present invention, in the first aspect, the discharge device may further include: the discharge portion (discharge electrodes 151, 161) has a needle shape, and the protective member protects the tip (151a) of the discharge portion from the flow of the gas, while the gas flows toward the tip in a space adjacent to the longitudinal direction of the discharge portion. In this case, particles generated around the tip by the discharge can be efficiently moved by the flow of the gas.

A discharge device according to a fifth aspect of the present invention is the discharge device according to any one of the first to fourth aspects, further including: a mounting member (ion generating element substrate 14) on which the discharge electrode is mounted, and a case (11) which houses the mounting member; the discharge portion protrudes from the case, the protective member is a plate-like member that protrudes from the discharge portion toward the upstream side of the gas flow, a part of the protective member faces at least a part of the discharge portion, and holes (openings 51b to 54b) for the gas flow are formed in portions corresponding to other portions of the discharge portion.

The same effects as described above can be obtained by an electric apparatus (100) having the discharge device configured as described above.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention, and new technical features can be formed by combining technical means disclosed in the respective embodiments.

Description of the symbols

1 ion generating device (discharge device)

11 case body

12 discharge control circuit board

13 step-up transformer

14 substrate for ion generating element (mounting member)

15. 16 discharge electrode

17 insulating sealing material

21 opening part

21a end face

31. 32 induction electrode

42. 45 tip part (discharge part)

41. 44, 411 to 414 electrical conductor

41a, 44a, 151a, 411a, 412a top end

43. 46 basal end

43a, 46a mounting part

43b, 46b bundling part

51 to 54 protection board (protection component)

51a to 54a tip end

51b to 54b openings (holes)

100 electric apparatus

101 casing for fan

102 air supply duct

103 blower

151. 161 discharge electrode (discharge part)

Claims

1. A discharge device for performing discharge, comprising:

a discharge electrode having a discharge portion for performing the discharge;

a protective member that is provided independently of the discharge electrode and faces the discharge electrode to protect at least a part of the discharge portion from a flow of the gas passing through the discharge electrode in a predetermined direction,

a mounting member to which the discharge electrode is mounted;

a case which houses the mounting member,

the discharge portion protrudes from the case body,

the protective member is a plate-like member that protrudes from the discharge portion toward the upstream side of the flow of the gas in the case,

the protective member has a portion facing at least a portion of the discharge portion, and a hole portion for flowing the gas is formed in a portion corresponding to the other portion of the discharge portion.

2. The discharge device of claim 1,

the discharge portion has a plurality of linear conductors;

the protection member exposes the distal end of the conductor located outside to the flow of the gas, and protects the distal ends of the other conductors from the flow of the gas.

3. The discharge device according to claim 2, wherein said conductive body has brittleness.

4. The discharge device of claim 3, wherein the conductive body is porous.

5. The discharge device of claim 1,

the discharge part is needle-shaped;

the protective member protects the tip of the discharge portion from the flow of the gas, and the gas flows toward the tip in a space adjacent to the longitudinal direction of the discharge portion.

6. An electrical apparatus, characterized in that it comprises a discharge device according to any one of claims 1 to 5.